[GRASS-user] r.stream.extract Syntax Problem

[Rich Shepard]

On Fri, 6 Apr 2012, Margherita Di Leo wrote:

> I meant something like:
> r.watershed ele=elevation.10m at PERMANENT acc=elevation.10m.weight_acc
> flow=weight -f

madi,

   Well, that's different from the example, so I tried it:

GRASS 6.5.svn :~/grassdata > r.watershed elev=dem10m.avg
accum=dem10m.acc.weighted flow=weight -f --o
SECTION 1a (of 4): Initiating Memory.
SECTION 1b (of 4): Determining Offmap Flow.
  100%
SECTION 2: A * Search.
  100%
SECTION 3: Accumulating Surface Flow with MFD.
  100%
SECTION 4: Closing Maps.
[Raster MASK present]

followed by:

GRASS 6.5.svn :~/grassdata > r.stream.extract
elev=dem10m.avg accum=dem10m.acc.weighted thresh=1000 stream_rast=dem10m.lm.streams
Load input maps and get start points...
ERROR: Accumulation map does not match elevation map!
[Raster MASK present]

   Still the same error generated. I'm quite puzzled.

   More suggestions certainly welcome! :-)

Thanks,

Rich